Perfect House Escape

One father was gift a new house to his son. And father was decided to play a simple trick with his son. Father was put in on his son at locked new house . Son was find out some hidden object. Then solve some interesting puzzle to escape from the locked new house. This is an good chance to prove his talented for his father. So, please help to find the key. I know, you are the talented one person. You can easily find out the way to escape from this house.